Update RISCV_SCAN_DELAY_MAX to UINT_MAX

[en-sc]

riscv-openocd/src/target/riscv/batch.h

Lines 48 to 55 in 3bed4c8

	/* The scan delay values are passed to "jtag_add_runtest()", which accepts an
	* "int". Therefore, the passed value should be no greater than "INT_MAX".
	*
	* Since the resulting delay value can be a sum of two individual delays,
	* individual delays are limited to "INT_MAX / 2" to prevent overflow of the
	* final sum.
	*/
	#define RISCV_SCAN_DELAY_MAX (INT_MAX / 2)

The reason for making RISCV_SCAN_DELAY_MAX INT_MAX / 2 no longer holds -- jtag_add_runtest() accepts an unsigned int since 0847a4d.

riscv-openocd/src/jtag/core.c

Line 592 in 3bed4c8

void jtag_add_runtest(unsigned int num_cycles, tap_state_t state)

This makes it possible to increase RISCV_SCAN_DELAY_MAX and remove/simplify checks.